A week ago, Grisham told CNN the first lady would be attending the annual meeting of influential financial leaders and business titans in a show of support for her husband, who intends to give remarks during his visit.

Melania Trump has not made a public statement since January 12, when news of a possible payoff from her husband's lawyer to porn star Stormy Daniels to cover up an alleged affair was first reported by The Wall Street Journal.

The first lady did, however, depart with the President later that day to Mar-a-Lago for the long holiday weekend, although she was not spotted with him during two evening dinners hosted by Trump, one with former New York Mayor Rudy Giuliani and another with House Majority Leader Kevin McCarthy.

Today we honor Dr. Martin Luther King Jr. & his service to this great country. I am honored to be First Lady of a nation that continually strives for equality & justice for all. #MLKDay

On Saturday, Melania Trump marked the one-year anniversary of her husband's inauguration by tweeting an image to mark the occasion that did not include the President, but rather was of herself, her arm linked with a military escort, at Trump's inaugural swearing-in ceremony.

She posted that the past year had been filled with "many wonderful moments," but she did not mention the President by name.